1. Research on Calibrating Device of Daily Clock Time Difference Testers Based on DDS Cascade Technology
- Author
-
Yan Ming, Ming Yang, Fucheng Yin, Li Nuo, and Zhang Shengnan
- Subjects
History ,Computer science ,Cascade ,business.industry ,Clock time ,business ,Computer hardware ,Computer Science Applications ,Education - Abstract
According to the specific requirements in the national verification regulations of JJG488-2018 “Instantaneous Daily Clock Time Difference Testers”, this paper has developed a calibration device for an instantaneous daily rate measuring instrument. Under the premise of not using FPGA, CPLD, DSP and complex algorithms, the device adopts DDS chip cascade technology and energy conversion principle to ensure that the maximum allowable error of the daily difference is 0.001s/d. Therefore, the device is not only suitable for personnel in the field of measurement to calibrate instantaneous daily clock time difference testers, but also can be used as a general-purpose measuring instrument with frequency measurement functions such as high-resolution frequency synthesizer calibration frequency meters.
- Published
- 2021